Thread-cutting temple for looms.



E- D. ROY.

THREAD CUTTING TEMPLE FOR LOOMS. APPLICATION FILED JUNE 19. i916.

Patented July 10, 1917.

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EDWARD D. ROY, OF GREENVILLE, SOUTH CAROLINA, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO DRAPER CORPORATIGN, OF HOPEDALE, MASSACHUSETTS, A CORPORA- TION OF. MAINE.

THREAD-CUTTING TEMPLE FOR LOOMS.

Specification of Letters Patent.

Patented July 10, 1917.

Application filed June 19, 1916. Serial No. 104,415.

To all whom it may concern:

Be it known that I, ED\VARD D. ROY, a citizen of the United States, residing at Greenville, county of Greenville, State of South Carolina, have invented an Improvement in Thread-Cutting Temple for Looms, of which the following description, in connection with the accompanying drawing, is a specification, like characters on the drawing representing like parts.

This invention relates to loom temples of a familiar type such as illustrated, for example, in the patent to Stimpson No. 765,687 granted July 26, 1904:, and which are provided with means to cut the filling end extending from the selvage of the cloth to the automatic filling replenishing mechanism of the loom.

In this type of temple the head is slotted, a fixed cutting blade is mounted in the slot, and a movable cutting blade having a hooked end operates in the slot in conjunction with the fixed blade. The operation of this movable blade is secured from the lay striking against a heel depending from the movable blade. The result is that the movable cutting blade during its forward or cutting stroke bears heavily upon the lower wall of the slot in which it operates. As a result the metal of the head is worn away, frequently resulting in injury or breakage of the cutting blades and inaccuracy of the cutting action.

The object of this invention is to guard against the wear of the metal parts in the cutting action of the temple thread cutter, insure accuracy of the cutting action, and prevent breakage of the parts. This object is secured by placing a rawhide insert in the lower wall of the slot beneath the movable cutting blade so that the bearing of the said'blade during the cutting stroke is upon this rawhide insert. More particularly the invention resides in a rawhide insert fitting into a vertical aperture in the lower wall of the slot with the rawhide insert bent to rest upon the lower wall of the slot and extend forwardly therealong beneath the movable cutting blade and thus form the bearing therefor during the cutting stroke.

The objects and nature of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

The drawings show so much of a loom temple of the type involved as is necessary to a disclosure of the invention.

In the drawings,

Figure 1 is a side elevation partially in vertical cross section of the rearward end of the temple shank and supported parts;

Fig. 2 is a view in rear elevation of the temple;

Fig. 3 is a detail in perspective showing a preferred form of rawhide insert.

As the general structure of the temple and cutting means is of an old and familiar type and is not specificallyinvolved in the present invention no detailed description of its construction and operation is neces sary. The shank 1 of the temple, the rearward end of which is shown in Fig. 1, terminates in the head 2 from which extends laterally the cap 3. The usual roughened roll l is journaled in the cap and head. The pod 5 projects laterally from the head beneath the roll. A heel 6 depends from the temple and on the beat up is struck by the lay moving the temple forwardly with it in the usual manner.

The head 2 is longitudinally and vertically slotted at 7 to provide for the cutting means and this slot extends forwardly through the lower portion of the shank.

The cutting means comprises a fixed blade 8 and a movable blade 9. The fixed blade 8 is fixedly mounted in the head and projects upwardly into the slot from the lower wall thereof. The movable blade in the form illustrated is provided with two similar hook shaped cutting members 10, one at each side of the fixed blade. The forward end of the movable cutting blade 9 is pro vided with stop lugs 11 and 12 limiting the longitudinal movement thereof in both directions and with a depending heel 13 extending into the path of the lay. A spring 14.- coiled about a pin 15 extending laterally from the shank l and about a pin 16 extending laterally from the heel serves to give a rearward and upward spring induced move ment to the movable cutting blade and to maintain it in substantially the position shown in Fig. 1.

When the lay heats up it first strikes the heel 13 of the blade 9 and immediately rocks the blade depressing the hooked end into its lowermost position so that the shank of the movable blade rests upon and isv pressed against the lower wall of the slot 7. As the lay completes its beat up movement the movable blade 9 is pushed forwardly rubbing over the lower wall of the slot 7 and if there is a filling end between the selvage and filling replenishing mechanism such filling end Wlll be caught between the hooked end 10 of the movable blade 9 and the rearward edge of the fixed blade 8 and be severed thereby.

This action of the movable cutting blade during its forward or cutting stroke is very severe upon the lower wall of the slot 7. When, as in practice, the temple head isformed of cast iron, the shank of the movable cutting blade 9 is formed of a brass composition and the cutting ends 10 are of steel inserted into the composition shank and secured by pins 17 as indicated in Fig. l; the composition soon wears away and the forward ends of the steel portions 10 rapidly cut into the lower wall of the slot 7 The wear is more or less uneven and frequently leads to strains upon the cutting blade or to improper cooperation with the fixed cutting blade, and some of the parts become broken or injured so as to interfere with the accurate cutting action.

Thisdifliculty is avoided in the present invention by forming a vertical aperture in the lower wall of the slot 7 beneath the movable cutting blade 9, and inserting therein a rawhide insert. This rawhide insert is shown separately in Fig. 3 and is preferably made cylindrical in shape and then bent intoan L-shape and one arm of the L flattened out so that as shown in Fig. 3 the insert comprises a cylindrical shank 18 and a flat tail 19. This rawhide insert is then placed in the position shown in Fig. 1 with the shank 18 inserted in the aperture in the lower wall of the slot 7, and the tail 19 extending forwardly beneath the movable cutting blade. It will thus be seen that as the movable cutting blade is moved forwardly under downward pressure during its cutting stroke it will ride over the insert with the direction of drag being along the tail 19 away from the shank 18. Thus a very elfective bearing is provided for the movable cutting blade during its cutting stroke, and as rawhide wears very slowly when in contact with metal there is no injury to the metal parts of the temple or the cutting means, and when at last the insert is worn a new one is readily placed in position. Thus at all times the accuracy of action of the cutting means is insured and breakage or injury to the parts prevented. By making the shank 18 of the insert cylindrical and the corresponding vertical aperture in the lower wall of the slot 7 cylindrical the construction is simplified and existing temples may be fitted out in a cheap and expeditious manner.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A thread cutting temple comprising a vertically and longitudinally slotted head, a cutting blade fixedly mounted in said head and projecting upwardly in said slot, a longitudinally movable cutting blade mounted to operate in said slot and to cut upon its forward stroke in cooperation with said fixed blade, and a rawhide insert in the lower wall of said slot beneath the movable cutting blade and forming the bearing therefor during the cutting stroke of said blade.

2. A thread cutting temple comprising a vertically and longitudinally slotted head, a cutting blade fixedly mounted in said head and projecting upwardly in said slot, a longitudinally movable cutting blade mounted to operate in said slot and to out upon its forward stroke in cooperation with said fixed blade, a vertical aperture in the lower wall of said slot beneath the movable cutting blade, a rawhide insert in said aperture extending upwardly therefrom and bent to rest upon the lower wall of the slot and extend forward therealong beneath the movable cutting blade to form the bearing therefor during the cutting stroke of said blade.

In testimony whereof, I have signed my name to this specification.

EDWARD D. ROY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of, Patents,

Washington, D. G. 

